I remember my first time in international First Class. A very spacious seat. Personal service. Continuous champagne, caviar, goose-liver pate, Godiva chocolates, etc, etc, etc. All on linen with silver silverware. Since then, I've flown first class a number of times. Most recently, a friend offered me a "free" upgrade certificate for a flight from Heathrow to Chicago. After fees and taxes, it would have cost me $100. I declined. Been there. Done that. I rationalized that after the trip was over the jet-lag was gone and the flight was just a blurred memory, I'd rather have the $100.